[PATCH v4 1/9] iio: adc: ab8500-gpadc: Make use of the helper function dev_err_probe()
From: Cai Huoqing <hidden>
Date: 2021-10-08 09:29:05
Also in:
linux-amlogic, linux-arm-msm, linux-iio, linux-rockchip, lkml
Subsystem:
arm/nomadik/ux500 architectures, iio subsystem and drivers, the rest · Maintainers:
Linus Walleij, Jonathan Cameron, Linus Torvalds
When possible use dev_err_probe help to properly deal with the PROBE_DEFER error, the benefit is that DEFER issue will be logged in the devices_deferred debugfs file. Using dev_err_probe() can reduce code size, and the error value gets printed. Signed-off-by: Cai Huoqing <redacted> --- v1->v2: Remove the separate line of PTR_ERR(). v2: Reviewed-by: Linus Walleij [off-list ref] v2->v3: Handle platform_get_irq_byname() that returns -EPROBE_DEFER. drivers/iio/adc/ab8500-gpadc.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-)
diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
index 7b5212ba5501..4c46a201d4ef 100644
--- a/drivers/iio/adc/ab8500-gpadc.c
+++ b/drivers/iio/adc/ab8500-gpadc.c@@ -1103,17 +1103,15 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) return ret; gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END"); - if (gpadc->irq_sw < 0) { - dev_err(dev, "failed to get platform sw_conv_end irq\n"); - return gpadc->irq_sw; - } + if (gpadc->irq_sw < 0) + return dev_err_probe(dev, gpadc->irq_sw, + "failed to get platform sw_conv_end irq\n"); if (is_ab8500(gpadc->ab8500)) { gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END"); - if (gpadc->irq_hw < 0) { - dev_err(dev, "failed to get platform hw_conv_end irq\n"); - return gpadc->irq_hw; - } + if (gpadc->irq_hw < 0) + return dev_err_probe(dev, gpadc->irq_hw, + "failed to get platform hw_conv_end irq\n"); } else { gpadc->irq_hw = 0; }
@@ -1146,11 +1144,9 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) /* The VTVout LDO used to power the AB8500 GPADC */ gpadc->vddadc = devm_regulator_get(dev, "vddadc"); - if (IS_ERR(gpadc->vddadc)) { - ret = PTR_ERR(gpadc->vddadc); - dev_err(dev, "failed to get vddadc\n"); - return ret; - } + if (IS_ERR(gpadc->vddadc)) + return dev_err_probe(dev, PTR_ERR(gpadc->vddadc), + "failed to get vddadc\n"); ret = regulator_enable(gpadc->vddadc); if (ret) {
--
2.25.1
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